Muhyo e Rojis Bureau of Supernatural Investigation Temporada 1 Episódio 6

Muhyo, Roji, and Nana visit a rustic hot spring resort to meet a client. They bathe in the hot springs while waiting for him... and then Roji catches a middle-aged man peeping into the womens bath at Nana. The man turns out to be their client and the author of a current best-selling novel series, The Butterfly of the Night, Yontani Abeyuki.